code: def generate_duplicate() -> DataFrame:
      df_bool_dupes = []
      for i in range(20):
          df_bool_dupes.append(
              DataHelper.generate_bool_feature_int(
                  name=f"int_bool_dup_{i+1}"
              ),
          )
  
      df_to_concat = (
          [
              DataHelper.generate_bool_feature_int(),
              DataHelper.generate_multi_feature_special(),
              DataHelper.generate_useless_category(),
              DataHelper.generate_multi_feature_standard(),
          ]
          + df_bool_dupes
          + [
              DataHelper.generate_bool_feature_int(
                  name="int_bool_dup_final"
              ),
          ]
      )
  
      df = pd.concat(
          df_to_concat,
          axis=1,
      )
      return df
  
imports: import copy
  import numpy
  import pandas
  import pytest
  from pandas import DataFrame, Series
  from autogluon.common.features.feature_metadata import FeatureMetadata
  from autogluon.features.generators import AbstractFeatureGenerator
label_desc: Use image node_id 16 for calling the DataHelper obj's underlying member method code with example usage: obj.generate_duplicate() and returns: df